画球属性动画平移跳转页面

一：首先自定义类：

public class ClerView extends View {
    private Paint paint;


    public ClerView(Context context) {
        super(context);
        init();
    }

    public ClerView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public ClerView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        //定义画笔 
        paint = new Paint();
        paint.setAntiAlias(true);
        //画笔填充颜色
        paint.setColor(Color.BLUE);

    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        //画圆球
        canvas.drawCircle(50,50,50,paint);
    }
}

二：定义布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".activity.WelcomeActivity">

    <com.example.moni.widget.ClerView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/dd"/>

</LinearLayout>

三：主页面

public class WelcomeActivity extends AppCompatActivity {

    private ClerView cv;
    private int item = 2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_welcome);

        cv = findViewById(R.id.dd);
        initData();
    }

    private void initData() {
        final ValueAnimator animator = ValueAnimator.ofFloat(0f,500.15f);
        animator.setTarget(cv);
        animator.setDuration(2000);

        animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
            @Override
            public void onAnimationUpdate(ValueAnimator valueAnimator) {
                Float mValue = (Float) animator.getAnimatedValue();
                cv.setTranslationX(mValue);
                cv.setTranslationY(mValue);
            }
        });

        animator.start();
        //设置2秒后跳转页面
        final Handler handler = new Handler();
        handler.postDelayed(new Runnable() {
            @Override
            public void run() {
                item--;
                if (item == 1){
                    Intent intent = new Intent(WelcomeActivity.this,MainActivity.class);
                    startActivity(intent);
                }
                handler.postDelayed(this,2000);
            }
        },2000);
    }
}